In a groundbreaking achievement, researchers have successfully brought back to life a worm that remained frozen for an astonishing 46,000 years, the same time when the Earth was home to wooly mammoths, saber-toothed tigers, and giant elks.The roundworm, of a new species called Panagrolaimus kolymaenis, survived in a dormant state known as cryptobiosis, enduring extreme conditions without water or oxygen. This groundbreaking discovery indicates that life can be halted and restarted, with the worms surviving for millennia.

The researchers rehydrated the worms in Russia and further analyzed them in Germany. Genetic analysis revealed the worms' novel species, and they shared a survival mechanism with another organism called C. elegans, both producing a sugar called trehalose that enables them to endure freezing and dehydration.

Philipp Schiffer, a research group leader at the University of Cologne, expressed amazement at finding the same biochemical pathway in species separated by hundreds of millions of years, showcasing deeply conserved processes in evolution. Studying these organisms could offer valuable insights for conservation biology and protection efforts for species facing extreme conditions today.

Overall, this research has significant implications for understanding survival mechanisms and could inform strategies to protect species in our changing world.